Convert 2d path to 3d bracelet
I don't really want to duplicate @moonboots' answer.. this one takes a slightly different approach, and may help with some intermediate steps for a beginner.



Working in the XY plane, X across.


Import your svg, and convert with AltC to a mesh. The mesh may be a bit messy, with a lot of edges that don't contribute to its shape or integrity. In Edit Mode, X > Limited Dissolve will get rid of a lot of surplus edges, by angle.
Create a plane that covers the geometry, and move it up in Z. Hovering over one of the long edges,  CtrlR > scroll to introduce enough edge loops across the plane to allow for deformation. X Delete > Only Faces to leave yourself with a wire frame.
In Object mode, select the plane, and then the path-mesh. Put the path-mesh into Edit Mode. In the tool region, find 'Knife Project'. Looking straight down Z in an orthogonal view, hit the button. This will project the plane's edges into the path-mesh.





Having rotated the whole mesh in Edit Mode, by 90 degrees in X so it's standing up on XY, assign a Simple Deform > Bend modifier, axis Z, 360 degrees.




This is what the rotation should look like, illustrated with the Transform Orientation set to 'Local', so the Gizmo shows the object's local axes. Note they are still coincident with the Global axes. (If they are not, you can hit Ctrl A > Apply Rotation)


Now you can apply the modifier and edit the mesh to join its ends (the small blue wedge in the picture). Use F or Bridge Edge Loops  between two edges to create a new face.
Now you can assign a Solidify modifier to give it thickness.




This example is quite low-resolution, you could use more divisions in the plane in step 2.

You can apply the Solidify modifier, and go in again with a Limited Dissolve,  adjusting the angle to tidy up as much as possible without losing detail

The topology is horrible for smooth shading or subdivision, but that's not what it's for. In Edit Mode, CtrlAltShiftM selects no edges, showing the object is manifold, and should print.